Aadhaar is a unique identity number issued by the Unique Identification Authority of India (UIDAI) to residents, based on demographic and biometric data. The official UIDAI ecosystem covers new enrolment, updating demographic or biometric details, and downloading or verifying an e-Aadhaar.
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Aadhaar (UIDAI)
India’s 12-digit unique identity number, and the official services for enrolment, updates, and downloading your Aadhaar.
Government Service
Quick Information
- Category
- Government Service
- Department
- Unique Identification Authority of India (UIDAI)
- Government Level
- Central Government
- Official Portal
- uidai.gov.in
- Last Verified
- 2026-09-06
Overview
Important Information
Eligibility & Benefits
- Eligibility
- Any resident of India, including children (with a guardian) and NRIs, can apply for Aadhaar enrolment; existing Aadhaar holders can update their details online or at an enrolment centre.
- Benefits
- A single verifiable identity number accepted across government and private services; free download of e-Aadhaar; self-service update of mobile number, address, and other demographic details online.
- Required documents
- Proof of identity and proof of address for new enrolment (as per UIDAI's accepted document list); existing Aadhaar number and registered mobile number for online updates.
How to Apply
- Application process
- Locate a nearby Aadhaar enrolment centre for new enrolment or biometric updates; use the myAadhaar portal or Aadhaar app for online demographic updates and e-Aadhaar download where biometric changes are not required.
Official Source
Unique Identification Authority of India (UIDAI)
Visit Official Website / Apply
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Source: UIDAI — Unique Identification Authority of India
Last verified: 2026-09-06
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